sa atmanam manyamanah

 krta-krtyam ivatmabhuh

tada manun sasarjante

 manasa loka-bhavanan

 

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 

 

One day Brahma, the self-born, the first living creature, felt as if the object of his life had been accomplished. At that time he evolved from his mind the Manus, who promote the welfare activities or the universe.